REGINALD CHAPFUNGA
For years, the climate conversation has been dominated by warnings.
Rising temperatures, devastating floods, prolonged droughts and worsening food insecurity have reinforced a narrative that the world is losing the battle against climate change. The warnings remain valid and urgent. Yet amid the gloom, a different story is beginning to emerge.
It is a story of momentum, innovation and possibility.
According to a recent United Nations Environment Programme (UNEP) policy brief, several clean technologies and sustainable practices have reached a point where their adoption is accelerating rapidly, driven not only by environmental concerns but also by economics, convenience and public demand. In other words, some climate solutions are becoming too affordable and too practical to ignore.
This phenomenon is known as a “positive tipping point”.
Unlike the dangerous climate tipping points that scientists fear, such as melting ice sheets or collapsing ecosystems, positive tipping points occur when a clean technology becomes so competitive and widely accepted that its growth becomes self-reinforcing.
The result is change that moves faster than expected.
Clean energy is becoming the new normal
Perhaps nowhere is this transformation more visible than in the energy sector.
A decade ago, renewable energy was often portrayed as expensive and dependent on subsidies. Today, the picture is dramatically different. Solar and wind power have experienced steep cost declines and are now cheaper than new coal and gas-fired power generation in much of the world.
Since 2020, renewable energy has accounted for more than three-quarters of new global electricity generation capacity. In many countries, solar and wind are no longer niche alternatives. They are becoming the backbone of national energy systems.
Battery storage is following a similar trajectory. Costs have fallen sharply while deployment has surged. These advances are helping address one of the traditional criticisms of renewable energy: reliability.
For Africa, this trend presents a historic opportunity.
The continent remains home to some of the world’s largest energy access deficits, yet it is also endowed with some of the best solar resources on Earth. Falling technology costs mean African countries no longer have to choose between development and sustainability. Increasingly, they can pursue both simultaneously.
Decentralised solar systems are already demonstrating this potential. Evidence cited by UNEP shows that access to solar home systems can improve education, health, safety and household productivity while reducing emissions. In many communities, a single solar panel can trigger a chain reaction of social and economic benefits.
The electric mobility revolution gathers pace
The transport sector is also undergoing a profound shift.
Electric vehicles represented less than three per cent of global new car sales in 2019. By 2025, they accounted for more than a quarter of new vehicle sales worldwide.
The transition is advancing fastest in countries such as Norway and China, but signs of acceleration are increasingly visible elsewhere. Notably, Ethiopia has emerged as one of Africa’s leaders in electric mobility, with electric vehicles accounting for approximately 60 per cent of new vehicle sales.
What is driving this change is not ideology. It is economics.
As battery costs continue to fall and charging infrastructure expands, electric vehicles are becoming more affordable and practical. Every new charging station increases consumer confidence. Every new vehicle sold helps lower manufacturing costs. Each development reinforces the next.
This is the essence of a positive tipping point.
For rapidly growing African cities struggling with congestion, pollution and rising fuel costs, electric mobility offers the prospect of cleaner air, lower transport costs and reduced dependence on imported petroleum products.
Building resilience through smarter cities
Climate action is not only about reducing emissions. It is also about helping communities adapt to a warming world.
This is where innovations in buildings and urban design are becoming increasingly important.
UNEP highlights the growing role of passive cooling solutions such as reflective roofs, shading, insulation and urban greening. These relatively simple interventions can reduce indoor temperatures by several degrees, making homes and workplaces more comfortable while lowering energy consumption.
Examples from India and Sierra Leone demonstrate how practical local solutions can deliver significant climate benefits. In Ahmedabad, reflective roof programmes are helping vulnerable communities cope with extreme heat. In Freetown, large-scale urban tree planting is reducing climate risks while creating employment opportunities.
For African cities facing rapid urbanisation and increasingly frequent heatwaves, these approaches offer affordable pathways to resilience.
Food systems can become part of the solution
Another reason for optimism lies in the global food system.
Food production accounts for a significant share of global greenhouse gas emissions, yet substantial gains can be achieved through relatively straightforward measures.
Reducing food waste is among the most promising opportunities. Globally, roughly one-fifth of food available to consumers is wasted, while millions continue to experience food insecurity.
Cities around the world are experimenting with innovative solutions, from surplus food redistribution programmes to behavioural campaigns encouraging consumers to waste less. These initiatives reduce emissions, strengthen food security and improve economic efficiency.
For Africa, where post-harvest losses remain a major challenge, reducing food waste represents both a climate strategy and a development priority.
The decade that matters
The UNEP report identifies the period between now and 2030 as particularly decisive.
Many clean technologies are approaching critical affordability thresholds. Governments, investors and businesses have a narrow window to accelerate their adoption through supportive policies, financing and infrastructure investments.
The significance of this moment extends beyond climate targets.
Clean technologies are increasingly linked to energy security, economic competitiveness, public health and job creation. Climate action is no longer simply an environmental imperative. It is becoming a development strategy.
The world remains far from solving the climate crisis. Temperatures continue to rise and the impacts of climate change are becoming more severe.
Yet there is growing evidence that the solutions are advancing faster than many expected.
